 /*
  * $Header: /cvshome/build/org.osgi.service.device/src/org/osgi/service/device/Constants.java,v 1.9 2006/07/11 00:54:08 hargrave Exp $
  *
  * Copyright (c) OSGi Alliance (2000, 2006). All Rights Reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package org.osgi.service.device;

 /**
  * This interface defines standard names for property keys associated with
  * {@link Device} and {@link Driver} services.
  *
  * <p>
  * The values associated with these keys are of type <code>java.lang.String</code>,
  * unless otherwise stated.
  *
  * @version $Revision: 1.9 $
  * @since 1.1
  * @see Device
  * @see Driver
  */
 public interface Constants {
     /**
      * Property (named &quot;DRIVER_ID&quot;) identifying a driver.
      *
      * <p>
      * A <code>DRIVER_ID</code> should start with the reversed domain name of the
      * company that implemented the driver (e.g., <code>com.acme</code>), and
      * must meet the following requirements:
      *
      * <ul>
      * <li>It must be independent of the location from where it is obtained.
      * <li>It must be independent of the {@link DriverLocator} service that
      * downloaded it.
      * <li>It must be unique.
      * <li>It must be different for different revisions of the same driver.
      * </ul>
      *
      * <p>
      * This property is mandatory, i.e., every <code>Driver</code> service must be
      * registered with it.
      */
     public static final String DRIVER_ID = "DRIVER_ID";
     /**
      * Property (named &quot;DEVICE_CATEGORY&quot;) containing a human readable
      * description of the device categories implemented by a device. This
      * property is of type <code>String[]</code>
      *
      * <p>
      * Services registered with this property will be treated as devices and
      * discovered by the device manager
      */
     public static final String DEVICE_CATEGORY = "DEVICE_CATEGORY";
     /**
      * Property (named &quot;DEVICE_SERIAL&quot;) specifying a device's serial
      * number.
      */
     public static final String DEVICE_SERIAL = "DEVICE_SERIAL";
     /**
      * Property (named &quot;DEVICE_DESCRIPTION&quot;) containing a human
      * readable string describing the actual hardware device.
      */
     public static final String DEVICE_DESCRIPTION = "DEVICE_DESCRIPTION";
 }

